Table 5.

Multinomial logit coefficients

Category: Type of coauthor institution	Explanatory variables
	Time trend	Degree to which firm is pro-publication	Degree to which R&D decisions are made by a single individual	Size of firm’s drug discovery effort in $m	Constant
Hospital	0.046*	0.071	0.029	−0.008*	−2.734
	(0.021)	(0.045)	(0.038)	(0.002)	(1.783)
Nonprofit	0.367	0.207*	0.007	−0.008*	−3.640
	(0.027)	(0.059)	(0.048)	(0.002)	(2.252)
Public, including	−0.058*	0.363*	−0.077**	−0.005*	4.494*
NIH	(0.023)	(0.055)	(0.043)	(0.002)	(1.922)
SELF	−0.041*	−0.018	0.061**	−0.001	6.761
	(0.018)	(0.039)	(0.034)	(0.001)	(1.557)
University	0.021	0.104*	0.039	−0.007*	0.489
	(0.019)	(0.041)	(0.034)	(0.001)	(1.598)

Dependent variable: Type of coauthor institution 1980–1988 data: 26,501 observations. 

Reference category: Private. 

Standard errors are in parentheses. 

^*, Significant at 5% level. 

^**, Significant at 10% level.